Meet driss - driss is double-walled insulated, therefore they'll keep your drink hot or cold for up to 24 hours. Both walls are made from 304 grade stainless steel, which is a key factor in superior quality of driss by Porter Green. Many inferior quality flasks are made from 201 grade stainless steel which contains manganese and rusts easily.

Whether it's holding a refreshing summer drink or a warming winter soup,driss is your stylish, sustainable and indispensable companion for every season.